4. the mad of a set of six data values is 10. the mean is 20. what could the data values be? show that the mean is 20 and the mad is 20.

5. five students scored 80 on a test, five students scored 85. and five students scored 90. finish the statements below.
a. the mean is
a. the median
a. the range
a. the mad is..

6. in a survey, 10 students and 10 teachers were asked how many hours of sleep they get each night. here are the results.
students: 7,6,8,9,8,9,10,10,10
teachers: 6,6,4,5,7,8,7,8,8,8,
what is the mean of each data set? what do the means tell you about each data set?